validate_associated plugin errors from many_to_many association

[opya]

Hello,

I have a model Card that has many_to_many association with the Order model. In the Card model, i have a method similar to the one in the plugin examples page something like this:

Sequel::Model.plugin :validate_associated

class Card < Sequel::Model
  many_to_many :orders
  
  def check_orders!
    orders.each do |order|
      delay_validate_associated_object(model.association_reflection(:orders), order)
    end
  end
end

class Order < Sequel::Model
end

suppose i have a Card instance card, when using card.check_orders! and then valid? i get something like this as an errors

{:orders=>["delivery_address Delivery address is missing."]}

i was wondering if there a way to get a result similar to this:

{:orders=>{ delivery_address: "Delivery address is missing."} }

i've checked here

sequel/lib/sequel/plugins/validate_associated.rb

Lines 75 to 77 in e296f6e

	obj.errors.full_messages.each do |m|
	errors.add(association, m)
	end

and i believe that this will work for me, but will change how the plugin works currently

+errors.add(association, obj.errors)
-obj.errors.full_messages.each do |m|
-    errors.add(association, m)
-end

as always, i'm sure there is a proper way to do that in Sequel :) maybe i missed some plugin or option. I'll be glad if someone helps me out.

[jeremyevans]

Model::Errors values are currently expected to be strings, so Sequel cannot currently support {:orders=>{ delivery_address: "Delivery address is missing."} }. Potentially, this could be supported via a plugin that subclasses Model::Errors and added support for nested errors.

[jeremyevans]

To clarify, Model::Errors values are expected to be arrays of strings (to support multiple error messages per column).

[opya]

checked the Model::Errors, but didn't get the part that you suggested that we can subclass the Model::Errors and extract it as a plugin. Checked how the other plugins are made and all of them are modules. Probably i don't get the whole picture at all, can you give me one more joker, please

[jeremyevans]

You can override Sequel::Model#errors_class in a plugin to specify a separate errors class (which could subclass from Sequel::Model::Errors), and then load that plugin into models where you want to support nested errors.